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Finding the Fourth Proportional to 68,072.80, 102,022.80 and 60,642.40

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Solution

The fourth proportional to 68,072.80, 102,022.80 and 60,642.40 is: 90,886.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,072.80 : 102,022.80 = 60,642.40 : x
  2. Step 2: Convert to fraction form
    68,072.80/102,022.80 = 60,642.40/x
  3. Step 3: Cross multiply
    68,072.80x = 102,022.80 × 60,642.40
  4. Step 4: Simplify right side
    68,072.80x = 6,186,907,446.72
  5. Step 5: Solve for x
    x = 6,186,907,446.72/68,072.80
  6. Step 6: Final answer
    x = 90,886.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.